/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/IntrinsicTriangulationMesh.h
FIntrinsicMeshandFIntrinsicTriangulationare derived from this class and each maintain their own connection with the surface mesh ( "normal coordinates" or "signpost data") that can track these surface mesh locations and can be used to reconstruct paths (e.g. intrinsic edges) on the surface mesh.
class FSimpleIntrinsicMesh : public [UE::Geometry::FSimpleIntrinsicEdgeFlipMesh](API\Plugins\DynamicMesh\Operations\FSimpleIntrinsicEdgeFlipMesh)